/Engine/Source/Runtime/Engine/Classes/Materials/MaterialInstanceDynamic.h
Copies over parameters given a material interface (copy each instance following the hierarchy) Very slow implementation, avoid using at runtime. Hopefully we can replace it later with something likeCopyInterpParameters()The output is the object itself (this). Copying 'quick parameters only' will result in a much faster copy process but will only copy dynamic scalar, vector and texture parameters on clients.
void K2_CopyMaterialInstanceParameters ( [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * Source, bool bQuickParametersOnly )